What is Clear (CLR) Instruction in PLC Ladder Logic?

The Clear (CLR) instruction in PLC ladder logic is used to set the destination value of a word to zero.

Clear (CLR) Instruction

What%20is%20Clear%20(CLR)%20Instruction%20in%20PLC%20Ladder%20Logics

This instruction always sets the Zero (Z) flag (S:0/2)

Other arithmetic status bits are always cleared (reset)

S:0/0, carry ©

S:0/1, overflow (V)

S:0/3, sign (S)

2 Likes